6525 HARDESON RD BASE FILE 2016-01-01 MF Import

C Intracorp August 25, 1997 � E-3592-710 Page 3 can be used. For passfve earth pressure, the available resistance can be computed usinp an equivalent fluid pressure of three hundred fifty (350) pcf. These lateral resistance values are allowable values, a factor-of-safety of 1.5 has been included. As movement of the foundation element is required to mobilize full passive resistance, the passive resistance should be neglected if such movement is not acceptable, Structural Fili Structural fill is defined as compacted fill placed under buildings, roadways, slabs, pavements, or other load-bearing areas. Structural fill under floor slabs and footinps should be placed in horizontal lifts not exceeding twelve (12) inches in loose thickness and compacted to e minimum of 90 percent of its laboratory maximum dry density determined in accordance with ASTM Test Designation D-1557-91 (Modified Proctorl. The fill materials should be placed at or near their optimum moisture content. Fill under pavements and walks shoul,: also be placed in horizontal lifts and compacted to 90 percent of maxfmum density except for the top twelve (12) (nches which should be compacted to 95 percent of maximum density. During dry weather, most soils which are compactible and non-organic can be used as structural fill. Based on the results of our laboratory tests, the on-site soils at the time of our exploration appear to near the optimum moisture content and should be suitable for use in their present condition as structural fill, provided the gradinp operations are conducted during dry weather. However, the native till has 20 to 40 percent fines passing the No. 200 sieve. Soil with fines in this range will degrade if exposed to excessive moisture, and compaction and grading will be difficult ff the soil moisture increases significantly above its optimum condition. If the native soil is exposed to moisture and cannot be adequately compacted then it may be necessary to import a soil which can be compacted. During dry weather, most non- organic compactible soil with a maximum particle size of six inches can be used. Fill for use during wet weather should consist of a fairly well graded granular material hsving a maximum particie size of six inches and no more than 5 percent fines passing the No. 200 sieve based on the minus 3/4-inch fraction. A contingency in the earthwork budget should be included for this possibility. Earth Coniuh�n[s, Inc.